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| 2013 || || || As part pof a campaign, Beijing starts phasing out coal-fired stoves in the city. Natural gas and other forms of clean energy are used to replace coal.<ref name="Beijing, northern China hit by worst pollution this year">{{cite web |title=Beijing, northern China hit by worst pollution this year|url=https://economictimes.indiatimes.com/news/environment/pollution/beijing-northern-china-hit-by-worst-pollution-this-year/articleshow/66618105.cms |website=economictimes.indiatimes.com |accessdate=12 May 2019}}</ref>
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| 2013 || || || "In January 2013, Beijing experienced a prolonged bout of smog so severe that citizens dubbed it an “airpocalypse”; the concentration of hazardous particles was forty times the level deemed safe by the World Health Organization (WHO)." <ref name="China’s Environmental Crisis">{{cite web |title=China’s Environmental Crisis |url=https://www.cfr.org/backgrounder/chinas-environmental-crisis |website=cfr.org |accessdate=13 May 2019}}</ref>
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| 2015 || December || || "In December 2015, Beijing issued red alerts for severe pollution—the first since the emergency alert system was established. The municipal government closed schools, limited road traffic, halted outdoor construction, and paused factory manufacturing. "<ref name="China’s Environmental Crisis"/>
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| 2015 || December || || "In December 2015, the Asian Development Bank approved a $300 million loan to help China address the capital region’s choking smog."<ref name="China’s Environmental Crisis"/>
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| 2017 || || || Average PM2.5 pollution level in Beijing remains 65% above the national standard – and six times above the {{w|World Health Organization}} guidelines.<ref name="Beijing Urbanizes"/>
